Original Summary

Most barcode scanners just give you the decoded text. When a PDF417 (the stacked barcode on driver's licenses, boarding passes and shipping labels) won't scan or scans wrong, that doesn't help you figure out why. So I built BarScope. You upload a photo or screenshot and it breaks the barcode apart: - each row, with its cluster and row indicators - each codeword, drawn as its 17 individual modules - the Reed-Solomon error-correction check, and which codeword is wrong if exactly one is - the full decoding math, step by step One thing I cared about: no AI guessing at the bars. I built the UI with an AI app builder, but the math is separate, audited code with 93 automated tests, and the app runs a self-test every time it loads. If the math code changes by a single byte, it refuses to run. It's free: https://pdf417dissector.base44.app What I'd love feedback on: Does it read your barcodes? If not, what kind of image failed? Is the row/codeword view understandable if you've never looked inside a PDF417 before? What would make this actually useful in your workflow? Happy to answer questions about how PDF417 works under the hood.   submitted by   /u/krndude002 [link]   [comments]

  • 情报分类：技术学习与提效
  • 分类依据：内容涉及技术、AI、软件工具或工程实践
  • 信息来源：Reddit · SideProject
  • 发布时间：2026/9/28 05:24:05